80 Quattro L5-2309cc 2.3L SOHC (NG) (1988)
Barometric Pressure Sensor: Description and Operation
Fig. 14 Altitude/Current Graph
The altitude sensor sends a voltage signal to the Injection, and Ignition Control Computers that varies depending on the altitude, or barometric
pressure, Fig. 14. This information is used to correct the fuel mixture during warm-up and full throttle enrichment, and the ignition timing during certain
engine loads, at various altitudes. The altitude sensor is located by the ignition control unit behind the left kick panel.